Many hay fields have recently been cut and baled for hay. After the final cutting for the year, it may not matter too much if bales are left in the field, but when more harvests are expected from that field, delaying removal may cut future yield.
If you’re seeing slow regrowth or weak alfalfa seedlings, it's time to get in the field and scout for the cause, most likely insects at this time of year. Nebraska growers have been reporting all kinds of insects causing problems.
Wheat stubble can be an excellent seedbed in which to no-till plant forages, particularly if you're preparing to start planting immediately after wheat harvest, while soil water is available and before weeds get a foothold.